TL001: Litterfall rates in Reference Stand within the Andrews Experimental Forest, 1977-1985
Notice
"As Is" Basis: All content, including maps and forecasts, is provided without warranties. Users are advised to independently verify critical information.
Citation
Harmon, M.; McKee, W. 2011. Litterfall rates in Reference Stand within the Andrews Experimental Forest, 1977-1985 Long-Term Ecological Research Andrews Forest LTER Site. [Database]. Available: https://andrewsforest-stage.forestry.oregonstate.edu/data/fsdb-data-catalog/TL001 Accessed 2026-05-10.
Abstract
Seasonal and annual rates of litterfall have been sampled at 6 permanent plots picked to represent a range of habitats and elevations. To assess variation in litterfall and decomposition and its role in nutrient cycling across an environmental gradient of moisture and temperature. This study is to be incorporated with others in the western and northern US to study the relationship of climate and vegetation on litterfall rates and decomposition.
Coverage
Temporal coverage: 1977-06-01 to 1985-01-11
Geographic coverage: Selected Reference Stands in the Andrews Experimental Forest
Spatial coverage:
Bounds: W -122.25882057, E -122.09452900, N 44.34400000, S 44.20177046
Purpose
No purpose entries listed in this EML file.
Project
Title: Long-Term Ecological Research
Personnel
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Sherri L. Johnson - Principal Investigator US Forest Service ;Pacific NW Research Station ;3200 SW Jefferson Way, Corvallis, OR, 97331, USAPhone: 541-758-7771Email: sherri.johnson2@usda.gov, sherri.johnson@oregonstate.edu
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Julia A. Jones - Principal Investigator Oregon State University;Department of Geosciences; Wilkinson Hall 104, Corvallis, OR, 97331-5506, USAPhone: (541) 737-1224Email: Julia.Jones@oregonstate.edu, geojulia@comcast.netORCID: http://orcid.org/0000-0001-9429-8925
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Matthew G Betts - Principal Investigator Department of Forest Ecosystems and Society; 201E Richardson Hall; College of Forestry; Oregon State University, Corvallis, OR, 97331Phone: (541) 737-3841Email: matt.betts@oregonstate.edu
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Michael P. Nelson - Principal Investigator Department of Forest Ecosystems and Society; 201K Richarson Hall; College of Forestry; Oregon State University, Corvallis, OR, 97331Phone: 541-737-9221Email: mpnelson@oregonstate.eduORCID: http://orcid.org/0000-0001-6917-4752
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David Bell - Principal Investigator Email: david.bell@usda.gov, david.bell@oregonstate.edu
Abstract
- The H.J. Andrews Experimental Forest is a living laboratory that provides unparalleled opportunities for the study of forest and stream ecosystems in the central Cascade Range of Oregon. Since 1980, as a part of the National Science Foundation Long Term Ecological Research (NSF-LTER) program, the Andrews Experimental Forest has become a leader in the analysis of forest and stream ecosystem dynamics.
- Long-term field experiments and measurement programs have focused on climate dynamics, streamflow, water quality, and vegetation succession. Currently researchers are working to develop concepts and tools needed to predict effects of natural disturbance, land use, and climate change on ecosystem structure, function, and species composition.
- The Andrews Experimental Forest is administered cooperatively by the USDA Forest Service Pacific Northwest Research Station, Oregon State University and the Willamette National Forest. Funding for the research program comes from the National Science Foundation (NSF), US Forest Service Pacific Northwest Research Station, Oregon State University, and other sources.
Funding
Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 2025755), US Forest Service Pacific Northwest Research Station, and Oregon State University. National Science Foundation: DEB1440409
Study Area Description
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Long-Term Ecological Research The Andrews Forest is situated in the western Cascade Range of Oregon, and covers the entire 15,800-acre (6400-ha) drainage basin of Lookout Creek. Elevation ranges from 1350 to 5340 feet (410 to 1630 m). Broadly representative of the rugged mountainous landscape of the Pacific Northwest, the Andrews Forest contains excellent examples of the region's conifer forests and associated wildlife and stream ecosystems. These forests are among the tallest and most productive in the world, with tree heights of often greater than 250 ft (75 m). Streams are steep, cold and clean, providing habitat for numerous aquatic organisms.
Associated Party
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Mark E. Harmon
Role: Principal InvestigatorOregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USAPhone: (541) 737-8455, (978) 724-0045 ext 223Email: mark.harmon@oregonstate.edu
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Mark E. Harmon
Role: CreatorOregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USAPhone: (541) 737-8455, (978) 724-0045 ext 223Email: mark.harmon@oregonstate.edu
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W. Arthur McKee
Role: CreatorFlathead Lake Biological Station ;The University of Montana ;300 Bio Station Lane, Polson, MT, 59860-9659, USAPhone: 406-982-3301Email: Art.McKee@umontana.edu
Contact
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Information Manager
Andrews Forest LTER Program, US Forest Service Pacific Northwest Research Station, 3200 SW Jefferson Way, Corvallis, OR, 97331Email: hjaweb@fsl.orst.edu
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W. Arthur McKee
Flathead Lake Biological Station ;The University of Montana ;300 Bio Station Lane, Polson, MT, 59860-9659, USAPhone: 406-982-3301Email: Art.McKee@umontana.edu
Publisher
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Andrews Forest LTER Site
Role: PublisherForest Ecosystems and Society Department in Forestry, Oregon State University, 201K Richardson Hall, Corvallis, OR, 97331-5752Phone: (541) 737-8480Email: lterweb@fsl.orst.edu
Study Description
Seasonal and annual rates of litterfall have been sampled at 6 permanent plots picked to represent a range of habitats and elevations. To assess variation in litterfall and decomposition and its role in nutrient cycling across an environmental gradient of moisture and temperature. This study is to be incorporated with others in the western and northern US to study the relationship of climate and vegetation on litterfall rates and decomposition. Field Methods - TL001
Methods
Method Steps
Field Methods - TL001
- From 1976 to 1990 fine litter was collected in 6 traps (1*1 m) at each site at 3 to 4 week intervals unless buried by snow. Since 1990 litter has been collected in 6 traps 29 cm in diameter (0.066 m).
- 6 traps randomly located on a diagonal grid across the 50m x 50m square plots. Litter collected every 3-6 weeks except in the winter at the highest elevation sites. Standing litter biomass estimated in 10-.1 m sq plots. RS13, RS14 are young growth forests; the rest are old-growth. Litter traps made of 2 x 4 inch wood frames 1 sq meter in area with nylon mosquito netting and support wire. Material oven dried at 70 deg C for at least 24 hr. Litter separated and weighed to nearest 0.01 g. 14 categories for sorting. From June 1978 on,"unattached needle weights.
Sampling
Software
No software entries listed in this EML file.
Keywords
- LTER controlled vocabulary: primary productivity (theme), leaf area (theme), reference stands (theme), permanent plots (theme), litterfall (theme), primary production (theme), inorganic nutrients (theme), organic matter (theme)
- Andrews Experimental Forest site thesaurus: Long-Term Ecological Research (LTER) (theme)
- LTER core research areas: primary production (theme), inorganic nutrients (theme), organic matter (theme)
Taxonomic Hierarchy
No taxonomic hierarchy listed in this EML file.
Data Entities
| # | Entity | Metadata | Data |
|---|---|---|---|
| 1 |
TL00101
TL00101 Litter fall, all sites 770606 - 810520: |
METADATA | DATA |
Metadata
TL00101 - TL00101
Object name: TL00101.csv
Records: 2299
Attributes: 21
File size: 223160 byte
Checksum (MD5): ae72a8a8ba79954e4772c41a0d0c6c76
Format: headers=1, recordDelimiter=\r\n, fieldDelimiter=,, quoteCharacter=", orientation=column
Constraints (2)
-
primaryKey: PRIMARY TL00101.DAY, TL00101.MONTH, TL00101.STAND, TL00101.TRAP, TL00101.YEAR
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notNullConstraint: NOTNULL TL00101.DATACODE, TL00101.DAY, TL00101.MONTH, TL00101.STAND, TL00101.TRAP, TL00101.YEAR
Attributes (21)
DATACODE - char(4) (nominal)
ID: TL00101.DATACODE
Data set code
Type system: Microsoft SQL Server 2008
STAND - char(4) (nominal)
ID: TL00101.STAND
Alpha code for reference stand
Type system: Microsoft SQL Server 2008
Code definitions (10)
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RS01
Reference Stand RS01, H.J. Andrews EF, Willamette NF
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RS02
Reference Stand RS02, H.J. Andrews EF, Willamette NF
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RS03
Reference Stand RS03, H.J. Andrews EF, Willamette NF
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RS04
Reference Stand RS04, H.J. Andrews EF, Willamette NF
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RS07
Reference Stand RS07, H.J. Andrews EF, Willamette NF
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RS13
Reference Stand RS13, Wildcat Mtn RNA, Willamette NF
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RS14
Reference Stand RS14, Wildcat Mtn RNA, Willamette NF
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RS26
Reference Stand RS26, H.J. Andrews EF, Willamette NF
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MIRK
Andrews Mirkwood site
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MW01
Old Andrews Mirkwood site
YEAR - numeric(4,0) (dateTime)
ID: TL00101.YEAR
Year of trap sample
Type system: Microsoft SQL Server 2008
Date format: YYYY
MONTH - numeric(2,0) (dateTime)
ID: TL00101.MONTH
Month of trap sample
Type system: Microsoft SQL Server 2008
Date format: month
DAY - numeric(2,0) (dateTime)
ID: TL00101.DAY
Day of trap sample
Type system: Microsoft SQL Server 2008
Date format: day
TRAP - numeric(1,0) (interval)
ID: TL00101.TRAP
Number of litterfall trap in the stand
Type system: Microsoft SQL Server 2008
Unit: number
Precision: 1.000000
Numeric domain: type=natural, min=1.0000 (exclusive=false), max=7.0000 (exclusive=false)
LCTWIGS - numeric(6,2) (ratio)
ID: TL00101.LCTWIGS
Live conifer twigs biomass
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=100.0000 (exclusive=false)
LOTWIGS - numeric(6,2) (ratio)
ID: TL00101.LOTWIGS
Other live twig biomass leached of nutrients
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=5.0000 (exclusive=false)
DCTWIGS - numeric(6,2) (ratio)
ID: TL00101.DCTWIGS
Dead conifer twig biomass
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=250.0000 (exclusive=false)
DOTWIGS - numeric(6,2) (ratio)
ID: TL00101.DOTWIGS
Other dead twig biomass
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=180.0000 (exclusive=false)
BARK - numeric(6,2) (ratio)
ID: TL00101.BARK
Bark biomass or on the forest floor
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=180.0000 (exclusive=false)
NEEDLES - numeric(6,2) (ratio)
ID: TL00101.NEEDLES
Attached conifer needles
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=100.0000 (exclusive=false)
UNATTACH - numeric(6,2) (ratio)
ID: TL00101.UNATTACH
Unattached conifer needle biomass
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=100.0000 (exclusive=false)
ELEAVES - numeric(6,2) (ratio)
ID: TL00101.ELEAVES
Evergreen hardwood leaf biomass
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=10.0000 (exclusive=false)
DLEAVES - numeric(6,2) (ratio)
ID: TL00101.DLEAVES
Deciduous hardwood leaf biomass
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=50.0000 (exclusive=false)
CONES - numeric(6,2) (ratio)
ID: TL00101.CONES
Female cones and male parts biomass
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=100.0000 (exclusive=false)
BGLICHN - numeric(6,2) (ratio)
ID: TL00101.BGLICHN
Blue-green lichen biomass
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=15.0000 (exclusive=false)
GRLICHN - numeric(6,2) (ratio)
ID: TL00101.GRLICHN
Green lichen biomass
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=50.0000 (exclusive=false)
MOSS - numeric(6,2) (ratio)
ID: TL00101.MOSS
Moss biomass
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=5.0000 (exclusive=false)
OTHER - numeric(6,2) (ratio)
ID: TL00101.OTHER
Unattached needles and budscales
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=100.0000 (exclusive=false)
CEDAR - numeric(6,2) (ratio)
ID: TL00101.CEDAR
Western red cedar parts biomass leached of nutrients
Type system: Microsoft SQL Server 2008
Unit: grams
Precision: 0.010000
Numeric domain: type=real, min=0.0000 (exclusive=false), max=70.0000 (exclusive=false)
Units
| number | number | dimensionless | number | dimensionless | 1 | dimensionless number, i.e., ratio, count |
| grams | g | mass | gram | kilogram | 0.001 | grams; 0.001 kilogram |
Intellectual Rights
Data Use Agreement:
The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. This Data Set is released under the Creative Commons license CC BY "Attribution" (see: https://creativecommons.org/licenses/by/4.0/). Creative Commons license CC BY - Attribution is a license that allows others to distribute, remix, tweak, and build upon your work (even commercially), as long as you are credited for the original creation. This license accommodates maximum dissemination and use of licensed materials.
It is considered professional conduct and an ethical obligation to acknowledge the work of other scientists. The Data User is asked to provide attribution of the original work if this data package is shared in whole or by individual parts or used in the derivation of other products. A recommended citation is provided for each Data Set in the Andrews LTER data catalog (see: http://andlter.forestry.oregonstate.edu/data/catalog/datacatalog.aspx). A generic citation is also provided for this Data Set on the website https://portal.edirepository.org in the summary metadata page. Data Users are thus strongly encouraged to consider consultation, collaboration and/or co-authorship with the Data Set Creator.
While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed and all data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data.
General acknowledgement: Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 2025755), US Forest Service Pacific Northwest Research Station, and Oregon State University.
Licensed
License: N/A
Maintenance
Maintenance update frequency: annually
Description
- An update history is logged and maintained with each new version of every dataset.
Change History
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Version1 (1988-06-30) Original metadata creation.
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Version2 (2002-04-30) Metadata restructured and moved into SQLServer metadata database LTERMETA. Data moved into SQLServer database FSDBDATA.